/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.zeppelin.flink

import org.apache.flink.table.api.{Table, TableEnvironment}
import org.apache.zeppelin.interpreter.{InterpreterContext, InterpreterResult}

class FlinkSQLScalaInterpreter(scalaInterpreter: FlinkScalaInterpreter,
                               z: FlinkZeppelinContext,
                               maxRow: Int) {

  private var btenv: TableEnvironment = scalaInterpreter.getBatchTableEnvironment()

  def interpret(code: String, context: InterpreterContext): InterpreterResult = {
    try {
      val table: Table = this.btenv.sqlQuery(code)
      val result = z.showData(table)
      return new InterpreterResult(InterpreterResult.Code.SUCCESS, result)
    } catch {
      case e: Exception =>
        return new InterpreterResult(InterpreterResult.Code.ERROR,
          "Fail to fetch result: " + e.getMessage)
    }
  }
}
